Measures to Reduce the Fault of Vane Pump and Improve the Service Life of Vane Pump
No matter how good the vane pump is, it needs correct use and proper maintenance to keep the equipment in good working condition. The same is true for the vane pump. If you want to make the vane pump have a long service life and a good working condition, you need to take precautions during or before operation. measure:
1) When the vane pump starts to run, it must be exhausted correctly
2) It is best not to install a filter screen on the oil suction pipeline. If it must be designed, it is recommended that the mesh size of the filter screen be larger than 250 microns, and attention must be paid to the pressure loss when the oil viscosity is high
3) Measure the pressure of the oil suction port of the vane pump, because the position of the oil tank and the speed of the prime mover will affect the pressure of the oil suction port, and must be adjusted according to the minimum oil suction pressure specified in the manual of the relevant product.
4) Be sure to check the flow rate of the hydraulic oil at the oil suction port and the oil outlet of the vane pump. The diameter of the pipe joint has a direct impact on the flow rate. The flow rate at the oil suction port cannot exceed 1.9m/s, and the flow rate at the oil outlet cannot exceed 6m /s. If you find that there is an excess, you need to adjust the pipeline
5) Pay attention to the relationship between the viscosity of the hydraulic oil and the temperature. Sometimes a slight change in temperature will greatly change the viscosity of the hydraulic oil, which may affect the lubrication of the parts. Therefore, measures must be taken to ensure that the temperature of the hydraulic oil is within the allowable operating temperature range within
6) Determine whether the selected hydraulic oil is suitable for the application conditions. The viscosity index, annual grade, operating environment, operating temperature range, filterability, thermal stability, etc. of the hydraulic oil are all factors that need to be considered
7) When designing the system, it is necessary to consider the ratio of the maximum flow rate to the fuel tank capacity and the heat dissipation of the fuel tank. Generally, the fuel tank capacity can be 3 to 5 times the maximum flow rate
8) When installing the vane pump, it is necessary to ensure the alignment of the prime mover (motor) output shaft and the pump drive shaft to avoid additional load and failure of mechanical parts
9) When the vane pump is used in high-speed pressure cycle equipment, in order to avoid the occurrence of cavitation, it is necessary to pay attention to the pressure increase or decrease gradient. For mineral oil, the pressure increase gradient is not greater than 5000Bar/s, and the pressure drop gradient is not greater than 6000Bar/s .